DebugView for Windows

DebugView for Windows v4.76

If you are a developer, you will find this tool very useful.

DebugView is an application that lets you monitor debug output on your local system, or any computer on the network that you can reach via TCP/IP. It is capable of displaying both kernel-mode and Win32 debug output, so you don't need a debugger to catch the debug output your applications or device drivers generate, nor do you need to modify your applications or drivers to use non-standard debug output APIs.

To use DebugView in your code, put some trace messages where you want to have some log informations, like

System.Diagnostics.Trace.Write("This is my trace log message");

You need to have the application open to see your messages.